After Julie (Tea Leoni) is kidnapped, the bad guys take her and are in the black blazer (which also changes to a bronco sometimes if you look closely), and then go to the foot chase. They finally get a cab and basically blows the drivers brains out. Right after Marcus (Martin Lawerence) jumps a top, it runs into another car. They back up, the camera goes to Marcus, then back to the car from his point of view. The taxi has the bumper from the car that it hit attatched. Then Mike Lowery (Will Smith) saves Marcus and the car some how loses the extra bumper.